Inverted incandescent gas-mantle.



S. COHN.

INVEBTED INCNDBSGENT GAS MANTLE.

" APPLICATION FILED s1tP'r.11,19oe.

898,437. Patented sept.15,19o8.

To all whom it may concem: 1

SAMUEL ooHN, or NEW YORK, N. Y.

INVERTED INCANDESCENT GAS-MANTLE.

Specification of Letters Patent.

Patented sept. 15, 190s;

Application led September 11, 1906. Serial No. 334,109.

Be it known that I, SAMUEL Conn, a citizen of the United States, and a resident of the city, county, vand State of New York,

have invented a new and useful Improvement in Inverted Incandescent Gas-Mantles,

`of which the following is a specification.

The object of my. invention is to provide a simple, durable, eicient and easily produced mantle of this description, and this object is accomplished by my invention as will appear below. f

For a more particular description of my invention reference is tobe had vto the accompanying'drawings forming a part hereof, in which: i.

Figure 1 is a side elevation of a webbing with an inserted shirring string, showin the initial step in producing the mantle. ig. 2 shows the enc. of the mantle shirred, and drawn tight. Fig. 3- shows the string tied and its ends trimmed. Fig. 4 shows the head trimmed. Fig. 5 shows the mantle turned inside out and ready to be placed on a mandrel for the iinal operation. Fig. 6 shows the mantle on the mandrel after the mantle has received its final shape.

Throughout the various views of the drawing similar reference characters designate similar parts.

Figs. 1 and 6 inclusive show the mantle Vafter successive operations in its manufacture. In Fig. ,1 the webbing a has the shirring string b inserted therein by any suitable mechanism or device snch as the machine shown in .my Letters Patent No. 678,542,

dated July 16, 1901.

' The webbing a is then gathered on the said shirring string b, thereby forming a head c as shownin Fig. 2. This is the next step in the production of my improved mantle. The shirring string is then wrapped around' the head and drawn taut, tied, trimmed and the mantle is then in the condition shown in Fig. 3 with the top of the head c indicatedl by c. The part c is then removed, leaving the mantle in the condition shown in Fig. 4.

The mantle is then turned inside out, when it is in the position shown in Fig. 5. It is then placed on a mandrel d, and the thickened portion compacted or compressed by the small hammer e. The upper end of the mandrel d is made liemis herical, and the mantle after beingplaced tiereon, is made to substantially conform to the u per end of the mandrel which leaves part ol) the mantle cylindrical and part hemispherical. In Fig. 6, A

thamantle is shown on the mandrel after its proper shape has been given.

aving thus described my invention, I claim:

1 A mantle for inverted incandescent gas lamps, consisting of a tubular body of webbing formed with a hemispheiical end closed by the gathered and tied end of the tubular body, which tied and gatheredend is located within the hemispherical end and compacted,

in the direction of its thickness.

' .2. A mantle for inverted incandescent gas 

